求大神分解这些因式2x^5-7x^3-4xX^4-x^2+4x-47x^2-5x+565x^-1280x

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求大神分解这些因式2x^5-7x^3-4xX^4-x^2+4x-47x^2-5x+565x^-1280x

求大神分解这些因式2x^5-7x^3-4xX^4-x^2+4x-47x^2-5x+565x^-1280x
求大神分解这些因式
2x^5-7x^3-4x
X^4-x^2+4x-4
7x^2-5x+56
5x^-1280x

求大神分解这些因式2x^5-7x^3-4xX^4-x^2+4x-47x^2-5x+565x^-1280x
2x^5-7x^3-4x
=x(2x^4-7x²-4)
=x(x²-4)(2x²+1)
=x(x-2)(x+2)(2x+1)
X^4-x^2+4x-4
=x²(x²-1)+4(x-1)
=x²(x-1)(x+1)+4(x-1)
=(x-1)(x³+x²+4)
7x^2-5x+56
这个题目是错的
5x^5-1280x
=5x(x^4-256)
=5x(x²-16)(x²+16)
=5x(x-4)(x+4)(x²+16)